Muscle Wins! Treatment in Clinical Orthodontics

I. Muscle Wins concept
1 Close relationship between muscle function and occlusion
1. Tongue and occlusion
2. Masticatory muscles and occlusion
3. Neck muscles and occlusion
2 Nasal respiration is the key to occlusal improvement and
post-treatment stability

II. Clinical keys to Muscle Wins

1 Key points for patient examination ?what to examine

2 Key points for diagnosis and treatment
1. Importance of relationship between masticatory muscle activity and posterior occlusal vertical dimension
2. Data from a statistical analysis of cephalometric measurements in patients with long-term occlusal stability
3. The ideal occlusal relationship to be established at the end of active treatment based on the statistical data

3 Characteristic "Muscle Wins" treatment
1. Improvement of tongue behavior and perioral environment
2. Establishment of nasal respiration
3. Correction of the posterior occlusal vertical dimension
4. Normalization of masticatory muscle activity
5. Others

4 Criteria for extraction ?When to decide and on what basis
1. Timing for extraction/nonextraction decision
2. Points to consider in making an extraction/nonextraction decision

III. Muscle Wins cases

Angle Class II cases

Angle Class III cases

Angle Class I cases
● Deep bite
● Open bite
● Crowding

Cases with asymmetric posterior occlusal vertical dimension (asymmetric neck muscles)
● Open bite
● Deep bite